It looks like there are still spent fuel caskets on the site. https://yankeerowe.com/fuel-storage/Does Yankee Atomic still have fuel rods up there.
I know they took the reactor out because when I was working site work I had to supervise improvements at a rail siding at the mouth of the Hoosic tunnel so they could load it out.
For the longest time MA SP had a detail at the entrance to the facility just making sure no one wanted to FA